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Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
@mourner
Engineer at @Mapbox, creator of @LeafletJS, open source enthusiast, algorithms geek, speaker, musician @obiymydoschu, baker, father of twin girls, Ukrainian
Kyiv, Ukraine
agafonkin.com
Joined January 2007
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Jun 13, 2025
    🎡 2 weeks ago, me and my band @obiymydoschu have released β€œVidrada”, our new album, passionately crafted in Kyiv for 7 years. I've never been more invested in a project, and will be proud of it for the rest of my life. All my love, dreams, hopes and worries in one record. ⬇️
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Feb 25, 2022
    I’m safe. We couldn’t bear the thought of my girls experiencing Kyiv bombings, so we packed as much as we could into our car, grabbed our cat, and fled. Drove all day and night through badly damaged roads. Now we’re relatively safe in Khmelnitsky, will rest and plan what’s next
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Feb 24, 2022
    Woke up at 5am from explosions. Russians are hitting military targets with ballistic missiles. Full-scale invasion is unraveling. Kyiv is relatively calm, I just cooked breakfast for family. Roads are blocked so no sense in fleeing. We’ll destroy the invaders, Putin is fucked πŸ‡ΊπŸ‡¦
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Dec 31, 2022
    Heard explosions multiple times today, and the attack continues into the night, but no amount of Russian missiles and bombs would prevent us from celebrating. Happy New Year! Light will prevail πŸ‡ΊπŸ‡¦
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Feb 27, 2022
    Look what my friends from @LeafletJS core team put up on the website while I was busy. Much love ❀️
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Dec 5, 2023
    A telling e-mail I got in response to the pro-Ukraine message on the @LeafletJS website. A Russian guy tells me that Russia is kind and peace-loving country liberating Ukraine from nazis, and because I'm lying about it, he will track down and slit the throat of my twin daughters.
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Nov 9, 2021
    The new version of @Mapbox GL JS introduces non-Mercator map projections, reimagined for the interactive maps era in a way you've never seen before. This is a big deal. Thread:
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Oct 3, 2022
    Replying to @elonmusk
    - Most people fled, were killed, kidnapped, or tortured/brainwashed in occupation, fair vote is impossible + illegal - "USA formally part of the British Empire (until Founding Fathers' mistake)" - Ukraine remains neutral = war in a few years after Russia recovers, repeat forever
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Aug 2, 2022
    Replying to @IlvesToomas
    As a Ukrainian, it's very inspiring to see Estonia becoming such a beautiful, modern, strong democracy in spite of all the terrible things Russia did to you, and showing what true leadership in the wake of adversity means. Thank you for all your kind support πŸ‡ͺπŸ‡ͺβ€οΈπŸ‡ΊπŸ‡¦
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Mar 3, 2022
    Went for a short walk with my girls for the first time since the start of the Russian invasion β€” they’re enjoying the snow. ❄️ Thankfully no air raid sirens while we were out.
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Aug 24, 2022
    Agafonkin family from Kyiv wishing everyone a happy Ukraine’s Independence Day! πŸ‡ΊπŸ‡¦β€οΈ A country of freedom, courage, willpower and love. We will prevail.
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Sep 5, 2024
    Air raid alerts visualization for the last 5 months in Kyiv, Sumy and Kharkiv from my sirens viz. Proper uninterupted sleep have been a luxury in Kyiv recently, but it's nothing compared to the absolute living hell in Kharkiv and recently Sumy. observablehq.com/@mourner/sirens
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Aug 14, 2019
    Introducing MARTIN: real-time terrain mesh generation in the browser! πŸ”οΈβž‘οΈπŸ“ Featuring @observablehq @threejs_org. I had so much fun working on this β€” really happy to finally share it with the world! 😊
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    MARTINI: Real-Time RTIN Terrain Mesh
    From observablehq.com
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    Volodymyr Agafonkin πŸ‡ΊπŸ‡¦
    @mourner
    Mar 30, 2025
    A moment exactly 14 years ago. Later that year, what you see on the screens got released as @LeafletJS. At the time, I never would have dreamed of how much this little piece of code would impact my career and the mapping software industry as a whole. Good times!
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